Attaché for ChatGPT

studio.attache/attache

GA4, Google Ads and Search Console in Claude. Read-only OAuth, multi-account for agencies.

client:ChatGPT transport:streamable-http

Install Attaché in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://app.attache.studio/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs